Tian-Yi LI, Pan PAN, Wei-Si MENG, Dong LI, Jun CAI, Xian-Ping WU, Jin-Jun FENG, Tie-Chang YAN. Theoretical and experimental study of a 0.85-THz tunable folded waveguide regenerative-feedback vacuum-electronics oscillator[J]. Journal of Infrared and Millimeter Waves, 2020, 39(3): 284
- Journal of Infrared and Millimeter Waves
- Vol. 39, Issue 3, 284 (2020)
Fig. 1. Operating principle of RFO
Fig. 2. Folded waveguide module
Fig. 3. Dispersion curve of TWT
Fig. 4. Dispersion curve of RFO
Fig. 5. Interaction impedance of RFO
Fig. 6. Output power of interaction structure in three-dimensional large signal software
Fig. 7. Output power in PIC
Fig. 8. CST module of feedback circuit and T-joint
Fig. 9. S parameter
Fig. 10. Model of regenerative feedback oscillator
Fig. 11. Output power with synchronous voltage of 12.9 kV
Fig. 12. FFT spectrum analysis with voltage of 12.9 kV
Fig. 13. The tuning effect of beam voltage on frequency
Fig. 14. Output power with synchronous voltage of 12.1 kV
Fig. 15. FFT spectrum analysis with voltage of 12.1 kV
Fig. 16. FFT spectrum analysis with voltage of 11.7 kV
Fig. 17. Photoresist film structure
Fig. 18. Folded waveguide electroplated on substrate
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Table 1. Dimension parameter of FWG in TWT and RFO
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Table 2. The tuning effect of beam voltage on output power and frequency
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